Webster park



No; 80,996. PATENTED AUG. 11, 1868. W. PARK. FLUID METER stitch. giant gaunt i t- Letters Patent No. 80,9596, dated August 11, 1868.

IMPROITEMENTS IN FLUIWMBTERS.

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TO ALL WHOM I MAY CONCERN: i

Be it known that I, WEBSTER PARK, ofthe city of Norwich, county of New London, and Qtate 0t Counecticut, have invented a new and useful machine for the measurement of water or any fluid, called a Fluid- Meter; and I do hereby declare that the following is a full,'clear, and exact description of the construction and operation of the-same, reference being had to the annexed drawings, making a part of this specification, in -whichi v Figure 1 is a perspective view.

Figure 2 is a longitudinal elevation.

Figure 3 is a view of the lower piston with its attachments.

Figure 4 is a view of the under side of the lower pisto'n G, with its valve H open; the dotted lines rrshowing theposition of the valve-H when closed.

Figure '5 is a view of the upper piston F, with its attachments.

Figure 6 is a view of the under side of the upper piston F, with its valve I open; the dotted lines r'r showing the'position of the valve I when closed.

Figure 7 is the guide I? of thoupper piston-rod. I Figure 8 is a front view of the plate D, and. channel E, in which the end, p, of theguide traverses, and

.thesprlug 'n. I p

. Figure 9 is a view of the upper side of the head E, showing the position of the guide P when passing down the channel E; the dotted lines to to showing its position when reversed by the spring n, and traversing the other side. of the channel E Figure 10 is a front view, and

Figure 11 is a side view of the arm 11:, radiating from the axle A, which passes through the side of the cylinder, connecting with tho registering-mechanismD.

In all the figures like letters refer ,to like parts. p A' is the cylinder, closed above by the cap B, through which passes the pipe C, through which the fluid passes into the cylinder, and is discharged through the head or guide E, as shown at fig. 2, and also closed below by the cap S, through which passes the discharge-pipe I F and G are pistons. The rod K of' the upper piston F is hollow, through whioh passes the rod L of the lower piston G, as shown inv fig. 2, in whose rod is a slot, N, traversedby the key 0, seen in fig. 6.

P is the guide, attached to the upper end of the hollow piston K, as shown in fig. 5, one end, 17', traversing the channel E, fig. 8, the other end, 12, moving the radiating arms m, fig. 10. i

T T is a chain, passing over the pulley R, fig 2, and attached to the piston-rods at the points it t.

Q Q are similar openings in the pistons F G, closed bythe valves I H, figs. 4 and 6, which are firmly attached to their respective piston-rods.

- The piston-rods K L turn freely in the pistons, whichare prevented from rotating with the rods, bytheir passing through the pistons out of the centre.

M is a small red, attached to the lower end of the piston-rod L, as shown in figs. 2 and 8, and extends" through a guide in the cap S, into the discharge-pipe B, fig. 2, for the purpose of keeping the lower piston-rod with its attachments in proper position.

e e, fig. 8, are projections upon the upper end of the plate D, fitting into'groovesin the upper end of the cylinder A, holding the plate D, which is firmly secured to the..h ead E, figs. 2 and 8, through which pass both piston-rods, as shown in fig. 2, thereby holding all the working parts in their proper position.

S is a support of the pulley R, joined to the plate D at S, in fig. 8.

n is a spring, secured to the plate D, atf, fig. 8, passing round the pin 0, in theplate D, running diagonally" across the channel E, forming a loop, in which the end, 12', ot the guide P moves, and is so adjusted that tho ide, in passingdown one side of the channel E, sets back the spring, which throws it quickly across, and, passing up the other'side of the channel E, is thrown back in the same manner. a The operation of the meter is as follows:

The fluid being admitted through the pipe 0, in fig. 2, presses down the upper pistouF, whose valve I is closed, as shownby'the dotted lines 1' r, in fig. 6, which, by the chain and pulley, draws up the lower piston G, whose valve H is open, as shown at fig. 4, through which the fluid passes, andis discharged through the pipe B, until the guide Breaches the bottom of the channel E, fig. 8, when the spring it throws the guide across,

1 partially rotating the piston-rods and closing the valve H, as shown by 'the dotted lines r, in fig. 4,'and opening the valve I, as shown in fig. 6,'by which the fluid is ndmittod through the piston F, and, pressing down thepiston G by the chain and pulley, draws up the piston F.

While the piston F. is moving down, the and, p, of the gnide'enga ges with one of the arms, m, thereby communicating motion to the indicator, but while passing back, the end, p, by the action of the spring, is thrown away from the arms, as shown by the dotted lines to w, fig.'9.

The nature of my invention consists iniconstruoting a cylinder, of suitable material, and of such diameter and length as the volume of water or fluid'to be measured may require, containing two pistons, each having arod passing through it, the rod of the lower piston passingthrough the rod of the-upper,'or adjacent thereto;

I both rods terminating, when 'their'pistons are at the bottom of their stroke, just above it died head or guide in the upper portion of the cylinder, and having their ends I connected by a chain passing over a pulley or pulleys in theupper end of the cylinder, or connected by any other mechanicaldevice equivalent thereto, in such 'a.

manner that as one piston makes its .dow nward stroke by the pressure of the fluid, it draws the other through its upward stroke."

' Through each piston is made one or more valve-holes, bounded b y lines radiating from the piston-rod, and

of suitable width, being enlarged upon the top of each piston to facilitite the passage of the fluid, or of any other form equivalent thereto.

The piston-rods are constructed either by a slot and key, or by making one, three or more sided, to pass within or adjacent to the other, or'in any other manner equivalent thereto, so that while the rods slide freely upon or by each other, the one cannot rotate without carrying the other with it.

Upon the bottom-of each, piston are valves, firmly attached to their respective piston-rods, in any suitable manner, of size sufiioient to cover the valve-hole or holes; and ii there is more than one valve-hole, the valves have holes through them,.corresponding to the valve-holes, and the valves so construoted,-or in any equivalent manner, are, so adjusted upon the piston-rods that when the valve or valves upon one piston are open, the valves on the other are closed; and not until the open valve is entirely closed by the partial rotation of the pistonrods doesthe closed valve begin to open, thereby preventing theflow of any portion of unmeasured fluid, and

wholly stoppingthe'passage of the fluid if the meter'is out of order, sothat no fluid can, in any case, pass the meter unless measured.

The pistons being kept close upon the valves by their weight, and by the pressure of the fluids, acting to move the pistons, make the valves secure from leakage. I I g i The pistons are prevented from rotating with the valve-rods, either by having the rods pass through some point in the pistons other than the centre, and continuing the rodlof the lower piston through the lower closed end of the cylinder for a guide, or, in case the rods pass through the centre of the pistons, by adding a guide for the pistons, or by any other means equivalent thereto.

The action of the valves and pistons is reversed by an arm, or wheel, or cam attached to one of the rods traversing one or more grooves or channels, and operated by one or more springs, or mechanism equivalent thereto, in such a manner that as soon as the pistons reach the end of their stroke, the valves are quickly reversed, and though, in the act of reversing, both valves are for an instant closed, yet there is no shock to the of the piston-rods.

meter or break in the discharge of fluids, both being prevented by the: yielding of the mechanical attachment The strokes of the'pistons, and thereby the quantity of fluid passed through the meter, are transmitted to a suitable registering-mechanism outside the cylinders by the engaging of one piston-rod during its strokes with one of any suitable number of arms radiating from a small axle, which passes through the. side of the cylinder,

packed in somesuhstantial manner, connected outside with suitable wheel-work and dials for indicating the volume of fluid passed. v

The fluid may be admitted through the upper closed end of the cylinder,'and, conducted in a pipe, through the upper portion of the cylinder, which contains the working parts, and discharged below the fixed head, thereby preventing injury to the working parts, or it may be admitted in any other suitable manner.

All the working parts areso arranged and attached together that they are inserted into and withdrawn from the cylinder readily, and in'onc body, thereby facilitating the construction and repairing of the meter, when necessary. I

What I claim as my invention, and desire to secure by Letters Patent, is as follows:

1. The combination and arrangement, in a fluid-meter, of .two or more loose pistons, resting on their respective valves, with their rods connected by the chain T and the pulley R, or their equivalents, and the spring n, or its equivalent, all arranged and operated within the cylinder A, and so placed that'all may be removed together, substantially as set forth.

2. The double-acting spring at, fig. 8, in connection with the channel E, or their equivalents, constructed, for operating the valve-rods and indicator of a fluid meter, substantially as herein set forth.

ewes 3 3. The combination of two or mere piston-rods of a. fluid-mam, rotating together, also acting as valve rods, with their valves, the guide with the groove, in which ittraverses, and the spring m: springs, or their equivalents, constructed ami operating subsgantially as and for the purposes herein set forth 4. The arrangement of the arm 2) of the pistommd, in connection with the spur m ratchetdvheel, for moving suitably-registering mechanism, substantialiy as anfi for the purposes herein set forth.

WEBSTER PARK.

Witnesses:

ALLEN Tzmzw, Summon Lucas; 

